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木星上有一个强烈的平流层喷气
F M Flasar1, V G Kunde, R K Achterberg
1NASA/Goddard Space Flight Center, Code 693, Greenbelt, Maryland 20771, USA. f.m.flasar@nasa.gov
Nature
|January 9, 2004
概括
只有木星,木星,木星才能做到这一点.
科学领域:
- 行星科学 行星科学
- 大气科学 大气科学
- 航空航天工程 航空航天工程
背景情况:
- 地球平流层表现出影响全球天气的近两年振荡 (QBO).
- 木星的平流层可能有类似的温度振荡,但数据有限.
- 以前的木星研究缺乏垂直分辨率和风速数据.
研究的目的:
- 以高空间分辨率绘制木星的平流层温度和风的地图.
- 为了研究木星上的大气振荡.
- 为了比较木星大气动态与地球的QBO.
主要方法:
- 太空船测量来自木星平流层的红外光谱.
- 对温度和风速数据的分析.
- 大气现象的高分辨率空间映射.
主要成果:
- 发现了一个强烈的,高海拔的赤道喷流 (大约. 140 m/s) 的速度.
- 在赤道喷流的结构中识别了近四年一次的振荡.
- 观测平流层的波动活动类似于地球的波动活动.
- 极地热点透到平流层的映射.
结论:
- 木星的平流层表现出复杂的动态,包括振荡和波动活动类似于地球的QBO.
- 高分辨率数据揭示了大气喷气的详细结构和相互作用.
- 等离子体环境显著影响木星的上层大气和平流层.
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